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Finding the Fourth Proportional to 489,789.92, 734,633.04 and 157,340

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Solution

The fourth proportional to 489,789.92, 734,633.04 and 157,340 is: 235,993.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,789.92 : 734,633.04 = 157,340 : x
  2. Step 2: Convert to fraction form
    489,789.92/734,633.04 = 157,340/x
  3. Step 3: Cross multiply
    489,789.92x = 734,633.04 × 157,340
  4. Step 4: Simplify right side
    489,789.92x = 115,587,162,513.60
  5. Step 5: Solve for x
    x = 115,587,162,513.60/489,789.92
  6. Step 6: Final answer
    x = 235,993.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.